misc-helper: adapt to commander v13

As of v13, `commander` really hates it when there are left-over
arguments after parsing the command-line.

Yet that is precisely what we need to do in order to have "Git-style"
global options, i.e. options that come _before_ the sub-command name.

So let's tell `commander` to chill out.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

script/misc-helper.ts

@@ -33,6 +33,7 @@ commander
     )
     .option("-c, --config <string>", "Use this configuration when using gitgitgadget with a project other than git", "")
     .option("-s, --skip-update", "Do not update the local refs (useful for debugging)")
+    .argument("[args...]", "command and arguments")
     .parse(process.argv);
 
 interface ICommanderOptions {